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Finding the Fourth Proportional to 8,859.60, 13,290.08 and 2,285.78

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Solution

The fourth proportional to 8,859.60, 13,290.08 and 2,285.78 is: 3,428.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.60 : 13,290.08 = 2,285.78 : x
  2. Step 2: Convert to fraction form
    8,859.60/13,290.08 = 2,285.78/x
  3. Step 3: Cross multiply
    8,859.60x = 13,290.08 × 2,285.78
  4. Step 4: Simplify right side
    8,859.60x = 30,378,121.18
  5. Step 5: Solve for x
    x = 30,378,121.18/8,859.60
  6. Step 6: Final answer
    x = 3,428.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.